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 #17 Re: Advice please on 200mm+ lenses Posted 14/07/2009 @ 18:39 |
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| #18 Re: Advice please on 200mm+ lenses Posted 15/07/2009 @ 18:08 |
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| In reply to post #17
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A lot of us do, but it's the 4/3rds format a lot of us aren't familiar with.
Unfortunately you'll end up with the manufacturer's brand or something like the sigma.
should be fine. the smaller the sensor it has to deliver the image to, generally, the better the quality of the lens. It's easier to make a high quality, small lens than a high quality large lens for the same price.
this is going to be your frst stop:
http://www.four-thirds.org/en/fourthirds/lense.html
http://www.4-3system.com/modules/lenses/ |
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| #19 Re: Advice please on 200mm+ lenses Posted 15/07/2009 @ 23:35 |
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Revision #1 (Last edited: 16/07/2009 @ 02:31) |
| In reply to post #17
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I thought the advantage of the 4/3rds system was that you could pretty much whack any manufacturers lenses on them? I was chatting to an Olympus Rep the other day pimping the Pen. (Which looks like an awesome little one-stop shop for anyone just getting into creative photography). I've played with my mates 100-400 Canon L, it was nice for the range, but not as sharp as my 70-200 2.8... If I were to go any longer than 200, I'd be saving a long time to get something up to scratch like the 300mm 2.8. Take advantage of your megapixels and crop to 50% - you can still print a 5mp (from 10mp original) image at a3 and not notice too much quality loss.
If not, you could always think abot whacking in some relatively cheap extension tubes? |
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| #20 Re: Advice please on 200mm+ lenses Posted 16/07/2009 @ 11:12 |
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| In reply to post #19
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the original 4/3rds is still limited by the mirror box and might not fit all lenses as an adaptor will make some lenses exceed the register distance and you lose infinity focus. eg: You can mount Nikon F lenses on canon, but not the other way around because canon's flange-to-film register distance is shorter than nikon.
The micro 4/3rds is a different kettle.
It doesn't have a mirror and is slightly smaller than regular 4/3.
This means you can pretty adapt any slr lens and some rangefinder lenses and you will also get a longer focal length equivalent than your canon or nikon gets with that same lens. |
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| #21 Re: Advice please on 200mm+ lenses Posted 16/07/2009 @ 22:52 |
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| In reply to post #20
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Thanks for the info, that's pretty interesting  |
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| #22 Re: Advice please on 200mm+ lenses Posted 17/07/2009 @ 11:44 |
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| In reply to post #21
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Addendum: Micro 4/3rds will obviously not have AF for lenses used via adaptors. |
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| #23 Re: Advice please on 200mm+ lenses Posted 18/07/2009 @ 22:08 |
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| In reply to post #19
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QUOTE (exige - 15/07/2009 @ 23:35) If not, you could always think abot whacking in some relatively cheap extension tubes?
Um, extension tubes are just tubes which reduce the minimum fous distance of a lens. I think you may mean "extender" in modern Canon terms, "teleconvertor" in old-guy speak. |
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| #24 Re: Advice please on 200mm+ lenses Posted 19/07/2009 @ 00:54 |
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| In reply to post #23
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Ah, ahem... yes, that's exactly what I meant  |
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| #25 Re: Advice please on 200mm+ lenses Posted 04/08/2009 @ 13:08 |
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| #26 Re: Advice please on 200mm+ lenses Posted 04/08/2009 @ 17:29 |
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| In reply to post #25
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There's a reason they're so cheap.
Most of them are manual focus, half of them are for mounts that no longer exist and the rest are crap brands.
Look for Tamron, Tokina or Sigma.
If you add a teleconverter, you also reduce the light coming through it.
so you'll also want to look for the faster lenses, such as F/2.8
These are more expensive, but if you go for the lenses that are f/5.6 at the long end, with a 2x tele, you'll end up with an f-stop over f/7+
(With f-stop, lower is better. Like golf)
Yes, you can shoot with that f-stop, but you lose depth of field and focus ability.
Most new cameras have +type sensors which are better for action focussing.
If the lens goes above 5.6, then it reverts to the slower - or | type sensors. |
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| #27 Re: Advice please on 200mm+ lenses Posted 07/08/2009 @ 04:49 |
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Revision #2 (Last edited: 07/08/2009 @ 05:22) |
| In reply to post #25
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Those things look kinda naaaasty! I reckon you'd have it back up on ebay quicker than you can say "toy camera lenses".
Bang for buck, I tested a Canon EF-S 55-250 IS last year - the image quality was really pretty good for what I could have picked up for just a few hundred bucks. I personally think that 250mm is enough for anyone with a 10mp camera, you can crop 50% (to a 5mp image) and have 500mm... and most people lose a sh*te load of mms to the fact that they get concrete feet when they pick up their camera... just walk forwards and see your cameras zoom reach improve instantly!
This was a 200mm 50% crop (taken with a 70-200 2.8):
There's a review of it here:55-250 review
I just got as close to the waters edge as I could whilst being safe and went for it. I don't feel like I need anymore zoom than that. If the subject is that far off, the picture will just be a snapshot, rather than a photograph anyways - if that makes sense  |
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| #28 Re: Advice please on 200mm+ lenses Posted 06/11/2009 @ 18:36 |
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Now then chaps, I have inherited an old 35mm film style camera - canon eos 1000F N camera body - which currently uses two lens' made by Sigma - firstly, can these film lens' be used with the new digital slr's camera bodies of say for instance a canon eos 450d
The lens have a red dot on them (that tells me from internet forums that they are EF compatible) and have auto as well as manual settings.
details are as follows.
Sigma 70-210mm 1:4 - 5.6 (??) Autofocus
Sigma 35-80mm 1:4 - 5.6 (??) Autofocus
Secondly, are the lens worth anything on the open market? because if they are not compatible, I may as well try to flog them on.
Lastly, why are all the modern lens lengths different - say for instance 70 - 300mm and 18 - 55mm?
Thanks in advance.  |
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"You're so adrift in far off places and hilly strangers you adore, that you're riding blind through eden lying right outside your door"
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| #29 Re: Advice please on 200mm+ lenses Posted 06/11/2009 @ 21:00 |
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Revision #1 (Last edited: 08/11/2009 @ 22:20) |
| In reply to post #28
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QUOTE (Bods - 06/11/2009 @ 18:36) can these film lens' be used with the new digital slr's camera bodies of say for instance a canon eos 450d. The lens have a red dot on them (that tells me from internet forums that they are EF compatible) and have auto as well as manual settings.
Yup, the EF lenses will fit on modern Canons too. They all accept EF autofocus fittings.
QUOTE (Bods - 06/11/2009 @ 18:36) Secondly, are the lens worth anything on the open market? because if they are not compatible, I may as well try to flog them on.
Not really worth a great deal, they aren't very fast lesnes but then their not too shabby either, so I'd suggest you keep them and try them out if you intend to get a digital SLR body. You'll find the two will give you a great range between them, though you'll also want something shorter (wider) say 35-50mm especially if you intend using a camera like the 450D which has a cropped sensor. (It's a long, long story, but essentially cropped sensors increase the focal length of lenses, in the case of the 450D, by 1.6x. So the 70mm will act like a 110mm lens on that body )
QUOTE (Bods - 06/11/2009 @ 18:36) Lastly, why are all the modern lens lengths different - say for instance 70 - 300mm and 18 - 55mm?
Just the design. lenses come out in all different lengths, zooms especially. Just take a look at the ads in the back of a photo mag
Have fun |
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I rarely use sexual innuendo in conversation, but I do occasionally like to slip one in... |
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| #30 Re: Advice please on 200mm+ lenses Posted 07/11/2009 @ 16:58 |
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| In reply to post #29
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Cheers, thats some positive reading and useful information. When you say faster lens - does that equate to the f 1 : 4-5.6 figure. In which case, is a higher number faster or a lower number?
Thanks again for the info. |
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"You're so adrift in far off places and hilly strangers you adore, that you're riding blind through eden lying right outside your door"
Pistehors.com
Meteoblue Weather Forecasting
SHredding the Jar Teaser |
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| Posts: 4133 |
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Isle of Tiree |
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| #31 Re: Advice please on 200mm+ lenses Posted 07/11/2009 @ 17:02 |
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